R anschutz



NOV. 30, 1943. sc u z 2,335,251

TYPEWRITING-CALCULATING MACHINE Filed June 21, 1939 6 Sheets-Sheet 1 Fig. 1

Nov. 30, 1943. R. ANSCHUTZ TYPEWRITING-CALCULATING MACHINE Filed June 21, 1939 6 Sheets-Sheet 2 W w m NOV. 30, 1943. sc u z TYPEWRITING-CALGULA'IING MACHINE Filed June 21, 1959 6 Sheets-Sheet 3 a L J 2 2 C. I M a 7 a mg fl/ JV? a P/ m M H M 8 Nov. 30, 1943. R. ANSCHUTZ TYPEWRITING-CALCULATING MACHINE Filed June 21. 1939 6 Sheets-Sheet 4 NOV. 30, 1943. sc u z 2,335,251

TYPEWRITING-GALCULATING MACHINE Filed June 21, 1939 6 Sheets-Sheet 5 Q g, 1 QQ W I.\. v QM NOV. 30, 1943. R, sc u z 2,335,251

TYPEWRITING- CALCULATING MACHINE Filed June 21, 1939 s Sheets-Sheet 6 Patented Nev. so, 1943 Robert Anschiitz, Zella-Mehlis, Germany: vested in the Alien Property Custodian Application June 21, 1939. Serial No. 280,405

In Germany July 12, 1938 4 Claims.

This invention relates to typewriting calculating machines of the type in which totalizer orders are operable seriatim.

The invention deals with a machine in which, upon operation of a total key, a cam ispowerdriven in cycles of rotation, one cycle for each totalizer order. Spring urged mechanisms first follow the cam to control and effect the totaltaking functions, such as unlocking the totalizer, connecting a zeroizing and selector device to the totalizer, and actuating the zeroizing and selector device. After such functions have been effected in dependence upon spring power, the power operated cam restores the mechanisms.

An object of the invention is to reliably carry out the total-taking operations.

To this end, a further object of the invention is to provide auxiliary devices by the operation of which functions, such as mentioned, are eflected and the primary spring drive is corresponding-- 1y relieved.

A further object of the invention is to provide an auxiliary device operable to counteract overthrow which might occur due to backlash in certain parts of'the totalizer drive.

The foregoing and other objects, features, and advantages will hereinafter appear.

In the accompanying drawings:

Fig. 1 is an elevation of the front part of the machine, viewed from the left.

Fig. 2 is a perspective of parts shown in Fig. 1, certain elements being shown separated for clearness.

Fig. 3 is a partly sectional elevation, viewed from the left, of the slide for unlocking the totalizers, and the mechanism under the control of the slide.

Fig. 4 is an elevation of from the right of Fig. 3.

Fig. 5 is a detail from Fig; 4.

Fig. 6 is a perspective of a selector shaft and associate rack.

Fig. '7 is a perspective illustration of the main locking and main calculating shafts, with the zero setting slide and other elements connected to the shafts.

Fig. 8 is adetail of Fig. 7.

Fig. 9 is a left side elevation of the machine.

Fig. 10 is a perspective of parts shown in Fig. 9.

1. General description of th machine Referring now to the drawings, Figs. 1 and 2, a paper carriage 2 is mounted to reciprocate on the machine frame I. Column totalizers 4 are the mechanism viewed secured on the totalizer suspension rail 3 of the paper carriage 2. Totalizer-operating mechanism is arranged in part in a casing 5, at the front plate of the machine, which includes the left-hand side plate 59, Fig. 2. Two cross totalizers 8 are on a carrier 1 movable along tracks 6 on the frame work. The cross totalizers 8 may be carried along by that column totalizer 4 which moves into active position, as shown, for example, in the Patent No. 2,046,524.

A typewriting key board 9 is arranged in the machine frame Land a calculating and a decimal tabulator key board, are arranged in a bearing frame III below th machine frame I. Further, a total key II with a key bar IIa for the column totalizers 4 is arranged in the bearing frame ID at the left, and two total keys not shown for the two cross totalizers 8 are arranged in the frame at the right.

A- square driving shaft I6, Fig. 2, is journaled in the bearing frame II), the bearing 35 for the driving shaft in the left-hand side plate of the frame being shown. A motor, not shown, with a suitable reduction gearing, is arranged at the right-hand side of the machine and rotates the driving shaft I5 continuously in clockwise direction, as indicated by the arrow I83.

2. Totalizer-unlockz'ng mechanism dog I2 (Figs. 1 and 2) is mounted to slide on the 1 unit I4, I5, and a spring IIb (Fig. 2) tends to move the dog I2 into engagement with a pinion I3 keyed to the square portion of the driving shaft I6.

Upon depression of the total taking key II (Fig 1) for'the-column totalizers 4, or of one of the not shown total keys for the two cross totalizers 8, the dog I2 is released and is moved by its spring Ilb to engage the pinion l3 so that the unit I4, I 5 rotates with the shaft I6.

An unlocking slide II (Figs. 3 and 4) is guided vertically in the machine, and a pair of springs I9 which are attached to the slide I 'l at their upper end and anchored in a transverse plate of the machine frame I at their lower end, hold a roller I8 at the lower end of the slide I'I against the edge of the cam plate I4. When the elevated portion of the cam plate I4 has moved from below the roller [8 upon the clockwise rotation of the unit I4, I5, th slide I1 sleeve 34 has a pair of notches hand end in which engage is held engaged with the sleeve shaft |6 by an angle bracket 26 is keyed on the shaft 22 and engages a'pin' 21 at the upper end of a lever 28. The lever 28 is fixed on a rotatably mounted shaft 29. A spring 23a is attached to the lower arm of the lever 28 and tends to turn it clockwise to ether with said shaft 29. A furtherlever 36 also arranged on the shaft 29 is the'unlocking member for that cross totalizer 8 which is visible in Fig.

3, and the unlocking member 38 engages a lever 3| in this totalizer. A similar arrangement, not

shown, is provided for the other cross totalizer. A lever 32 projects upwardly from the main locking shaft 22 and th clockwise movement imparted to the parts by the means described, causes the lever 32 to unlock that column totalizer 4 which is in active position at the time.

It will appear that the springs l9, in moving down the unlocking slide l1 and operating, through the mechanisms described, the cross totalizer and column totalizer unlocking levers 30 and 32, must overcome the friction of the mechanism which, in addition to the gradual decrease in their tension, tends to interfere with the proper functioning of the'machine.

To overcome this drawback, an auxiliary device by which the springs |9 are relieved, is provided according to the invention, as will now be described.

3. The auxiliary unlocking device The cam plates "and I are fixed to a sleeve 34 rotatable in the bearing 35 in the left-hand side plate of the lower frame In (Fig. 2). The

33 in its leftteeth 31 on a sleeve 36 which is also rotatable in the bearing where a detachable connection is" formed be tween the two sleeves by their notches and teeth. Three cam plates, '9. right-hand cam plate 38, a left-hand cam plate 39, and a central cam plate I91 (Fig. are secured on the-sleeve 36 in any suitable manner. The three cam plates and their sleeve unit. The right hand cam plate 38 controls the auxiliary unlocking device, as will be described below. The left hand cam plate 39 controls an auxiliary device for the coupling of the zero setting slide with the main calculating shaft, as will also be described. The central cam plate 1 91 controls an auxiliary device-for operating the selector shaft and the main calculating shaft, as will also be described. By' means of rivets 46 in holes 43 of the end cam plate 38, a cam 42 is secured to the outer side of the end cam plate 38, the rivets extending through holes 4| in the cam 42 (Fig. 2).

The sleeve 36 of the auxiliary controlling unit 34 of'the unit |4, IS on the driving 45 which is fixed on the left-hand side plate of the bearing frame ill by screws 44. The free end 46 (Fig. 2) of the bracket bears against the left-hand face of the end cam plate 39 and holds the teeth 31 on the sleeve 36 in the recesses -33 in the sleeve 34 so that the units may rotate in unison. when the bracket 45 is removed the 36 make up the auxiliary controlling auxiliary controlling unit can be detached from the unit I, I.

A bellcrank 41 (Figs. 1 and 2) is fulcrumed about a screw 48 in the frame I. The downwardly directed arm of the bellcrank 41 has a roller 49 which is held against the edge of the 'cam plate 38 by a spring 41a connected to a pin 41b (Fig. 2) on the horizontal arm of the bellcrank 41 and to a pin 410 of a double-armed lever |2| which is fulcrumed on a bracket secured to the outer side of the machine frame I. Lever |2| releases the total key which is locked in depressed position during the total taking operation, but is not a part of this invention.

A rivet 5| at the rear end of the horizontal arm of the bellcrank 41 projects at the right-hand side of the arm into a slot 52 in the lower end of a connecting rod 53. A spring 50 attached to a pin 55 on the rod 53 and to the rivet 5| provides a yielding connection between the bellcrank 41. and the connecting rod 53.

A bracket 53a which is secured to the inner side of the rod by two screws 54 is pivotally connected by screw 56 to a bellcrank lever 51 swingable about the reduced end 58 of the main locking shaft 22 at the outer side of the wall 59. This end has a threaded portion 6| for a lever retaining nut 69. The vertical arm of the lever 51 presents a flat face 62 and a tooth 66 at one side of the face. Under the pull of the spring 56, the connecting rod 53 is pulled down in the direction of the arrow 65 until the upper end of its 'slot 52 bears on the rivet 5| and this holds the lever 51 ready for engaging, with its tooth 66, the rear side of a lug 63 on lever 64 which is keyed on the main locking shaft 22. This shaft, it will be remembered, is provided with the unlocking lever 32 for the column totalizers 4.

At the upper end 8| (Fig. 2) of the connecting 4. The operation of the auxiliary unlocking device Upon depressing the total key H for the column totalizers 4, or one of the not shown total keys for the cross totalizers 3, the unit |4, l5 and the auxiliary controlling unit rotate clockwise with the driving shaft l6. The unlocking slide I1 is pulled down by its spring l9 and its incline 20 turns the main locking shaft 22 clockwise, as'described. The auxiliary unlocking device assists the springs l9" asfollows: The rise of the cam plate 38, through thefroller 49, turns the bellcrank 41 anti-clockwise about its fulcrum screw 48, whereby spring 50 by which the connecting rod 53 is connected to the bellcrank 41 pulls down the rod 53 (Figs. 1 and 2) in the direction of the arrow 65 to. swing the lever 51 which is pivotally connected to rod bracket 53a by the screw 56, clockwise. Tooth 66 of lever 51 acts on the lug 63 of the lever 64, which is keyed on the main locking shaft 22, whereby lever 64, the shaft 22, and the unlocking lever 32 are turned clockwise, and the lever 32 unlocks that column totalizer 4 which is in active position. The turning of the shaft 22 in clockwise direction eflects also the unlocking of the cross totalizers 8, through the means illustrated in Fig. 8, that is, the forked arm 26, the pin 21, the lever 28, the shaft 29, and the unlocking arms 30.

It will be understood now that the auxiliary device which is operated by the cam plate 38 of the auxiliary controlling unit, relieves the springs I8,

The yielding connection 88 between the connecting rod 83 and the bellc'rank 41 prevents the over-stressing of members if obstruction occurs in the mechanism.

5. Mechanism for coupling the zero setting slide to the main calculating shaft As described in section 2, the arm 28 (Figs. 3, 4, and is turned clockwise. A pin 88 (Figs. 3 and 5) on the arm 28 engages the upper edge of an arm 88 which is keyed on a couplingshaft 18 arranged below, and at right angles to, the shaft 22, and turns the coupling shaft 18 clockwise against a spring I21 (Fig. 5). The coupling shaft 18 is mounted to turn in bearings, not shown, in the front and the rear wall of the casing 8. The two arms H and 12 (Figs. 3 and 4) of a coupling fork are keyed on the coupling shaft 18 and coupling pins 18 and 14 which are riveted into the respective arms at their free ends, engage in an annular groove in the hub 18a of a spur gear 15 (Fig, 4). The spur gear 18 is mounted to slide, but is held against rotation, on the main calculating shaft 18, in that a pair of fingers 11 (Fig. 4) projecting from gear 15 slidably iit slots 18a in the perimeter of a disk 18 which is keyed on the shaft 18. When the coupling shaft 18 is'turnedclockwise by the pin 88 on the arm 28 and by the arm 88, as described, the arms H and 12 (Fig. '1) of the coupling fork move in the same direction and the spur gear 15 is shifted to the right and into mesh with a rack 18 (Fig. '1) at the upper end of a. zero setting slide 88. The zero setting slide 88 is mounted for vertical reciprocation in the left hand portion of the totalizer actuating mechanism. In addition to its upper rack 18, the zero setting slide 88 has a bracket witha lower rack I34 which meshes with a pinion I38 on a shaft in the bracket I53 (Figs. 2 and 7).

The auxiliary device by which movement the spur gear 15 into mesh with the upper rack 18 of the zero setting slide 88 is reliably effected, will now be described.

6. The auxiliary coupling device As mentioned in section 3, an angle 82 (Figs. 1 and 2') with a tooth 85, is adjustably secured to the connecting rod 58. The lower edge 88 (Figs. 1 and 2) of the forwardly extending tooth 88 is above the upper edge 88 (Fig. 2) of an auxiliary coupling bellcrank 81, which, as shown in Fig. 2, is fulcrumed about a screw 88 in a bracket 88 secured to the outer side of the wall 58. The tail end 8| of the bellcrank projects through a slot in the wall 58 and is held against the arm 12 of the coupling fork on the shaft 18 by the weight of the heavier outer arm 81.

7. The operation of the auxiliary coupling device Upon descent of the connecting rod 58 in the direction of the arrow 85, as described in section 4, the lower edge 83 of the tooth 88 which projects from the angle 82 on the upper end of the connecting rod 53, engages the upper edge 88 (Fig. 2) of the bellcrank 81 and turns the bellcrank 81 anti-clockwise about the screw 88 whereby the tail end ill of the bellcrank 81 bearing on the arm 12 turns the coupling fork 11, 12 and the coupling shaft 18, clockwise to move the spur gear 15 (Figs. 3, 4 and 7) to the right on the main calculating shaft 18, and into mesh with the upper rack 18 (Fig. 'l) oi the zero setting slide 88. 1

By the auxiliary device described, a rapid an reliable coupling of the spur gear 18 with the zero setting slide 88 is effected on the-one hand, and on the other hand the springs I8 (Figs. 3 and 4) of the unlocking slide I1 are assisted in their function of coupling the spur gear 18 with the rack 18 of the unlocking slide 88.

An auxiliary device is also provided for the mechanism by which the spur gear 15 is uncoupled from the rack 18 of the zero setting slide 88, as will now be described. Reference will first be had to 8. The mechanism for uncoupling the zero setting slide from the main calculating shalt A downwardly extending arm 84 (Figs. 2 and 7) is keyed on the coupling shaft 18. As the shaft is turned clockwise, the tooth-shaped lower edge of the arm 84 overrides a tooth 88 (Fig. '1) at the right-hand end of a latch 88, pivoted on a bolt 81, so that tooth 88 engages behind the arm 84 underthe action of a spring 88a attached to the left-hand end of the latch 88 and holds the shaft 18 in its coupling position.

After the typewriting operation which is started by the zero setting slide through known.

means which will not be described, because the means form no part of the invention, has been completed, a slide 88 which is arranged for vertical displacement at the left of the casing 5 of the calculating mechanism is raised by the typewriting means against the arrow 85, and swings the latch 88 whose left-hand end extends into a hole I88 in the slide 88, clockwise about the bolt 81. A rocker 88a engages with the left-hand arm in a hole 88c (Fig. I) in the slide 88 which is above the hole I88 and its right hand arm bears against the arm 84 on the coupling shaft 18. As the slide 88 is raised, the rocker 88a is swung clockwise about its fulcrum 88b in a suitable bracket and acts on the arm 84 to turn said arm and the coupling shaft 18, with the arms H, 12 anti-clockwise, thereby shifting the spur gear 15 to the left and out of mesh with the upper rack 18 of the zero setting slide 88.

In order to efiect a more reliable uncoupling of the spur gear 15 from the zero setting slide 88, the auxiliary uncoupling device is provided, and may be used instead of the uncoupling device just described.

9. The auxiliary uncoupling device Referring now to Figs. 1 and 2, a slide I88, with slots I82 (Fig. 2) in its upper and lower crooked ends, is guided by a screw I8I engaging in the upper slot and secured in the side wall 58 of the casing 5 for the calculating mechanism, and by a screw I8I engaging in the lower slot and secured in the left-hand side plate of the machine frame I, so that the slide can reciprocate vertically. A lug I84 at the lower end of the slide I83 supports a roller I85 (Fig. 2) for cooperation with the cam 42- on the cam plate 38 in the controlling unit. The releasing lever I2I to which the upper end of the spring 41a is secured at 410, as described, is pivotally connected to the slide I83 at I22 so that the pull of the spring 410. holds the roller I85 in the path of thecam 42, the normal position of the slide I83 being that in which it has been lowered in the direction of the arrow 65 until the upper ends of its slots I82 bear against the screws IN.

A catch III (Figs. 1 and 2) is fulcrumed about a screw H2 in a slot H8 in the left-hand side a plate 59 of the casing 8 so that the arm IIO (Fig.

the one hand, and an upwardly projecting lug mm of the abutment I'I, on the other hand,

guide the outer arm I I0 of the three-armed catch III. The lower inner arm 4 of the threearmed catch III has a hook I 28 at its free end for engaging the lower edge 95 of the arm 94 on the coupling shaft I0, and its upper inner arm H is arranged as a pusher for the left-hand edge H8 (Fig. 2) of the arm 94. A spring III which is attached to a pin 011, Fig. 2, on the outer arm IIO of the catch III and to a pin H8 in the left-hand side wall 89 of th casing 5 urges the catch I I I anti-clockwise about its screw H2 and holds the outer arm IIO against the edge II9 of the abutment I01, this being the normal position of the catch I I I.

10. The operation of the auxiliary uncoupling device When the total key II for the column totalizers 4 or one of the not shown total keys for the cross totalizers 8 has been depressed the means lower edge 95 acts on the tooth I26 (Fig. 2) at the lower inner arm IIII of the catch I II and turns the catch III clockwise about its fulcrum screw H2 against the spring I II until the tooth I26 engages behind the arm 94 under the reaction of the spring I ii to keep the spur gear in mesh with the rack I9 of the zero setting slide 80.

As described, the auxiliary controlling unit is rotated clockwise with the driving shaft l8 upon operation of a total key. The cam 42 at the cam plate 38 of the controlling unit is so arranged on the cam plate that it acts on the roller I05 at the lower end of the slide I03 and raises the slide against the spring 47a and in the opposite direction of the arrow 65. The edge II9 of the abutment I01 on the slide I03 acts on the outer arm III) of the catch III and turns the catch III clockwise about its screw II2 against the spring I I1. arm II4 of the catch III releases the arm 94. The coupling shaft 70, its arm 94 and the fork II, I2 are now turned anti-clockwise by the spring I21 (Fig. 5) which engages the arm 69 on the couplingshaft I0. While this occurs, the upper or pusher arm H5 of the catch III bears against the left-hand edge H8 (Fig. 2) of the arm 94 and accelerates the anti-clockwise movement of the arm 94 and the fork II, I2. By

' these means, the uncoupling of the spur gear I5 from the rack I9 of the zero setting slide 80 is effected more rapidly and reliable operation of the parts involved is ensured.

11 Description of the device for correcting overthrowing rack at its outer end. The inner ends of the parts I28, I29 are fastened together by screwand-slot connections. Fig. 10. so that the parts may be relatively adjusted lengthwise. The rack at the free end of the front part I29 meshes with a pinion I32 (Figs. 7 and 2) on a shaft I84 (Fig. 7) which is mounted torotate in thebracket I58. The rack at the free end of the rear part I28 meshes with a pinion I28a (Fig. 6) made in the left-hand end of the selector shaft III. The ends of the selector shaft "I are mounted to rotate in the two brackets I281; and I28cillustrated in Fig.6. The arrangement of the transmission member I28, I29 with respect to the pinion shaft I54 (Fig. 2) and the selector shaft III (Fig. 6) is shown in Fig. 9, it being understood, however, that the means for moving the transmission member to the front in the direction of the arrow I3I is a spring I30 in the example illustrated in Fig. 6, and a system of levers in Figs. 9 and 10. as will be described later.

During the total taking operation the spring I30 moves the transmission member I28, I29 to the front in the direction of the arrow I3I and this causes the zero setting wheel I42 (Fig. '1) to be rotated in conformity with the value present in the corresponding calculating place of that cross totalizer 8 from which the total is taken, until the active numeral wheel indicates 0, by the following mechanism illustrated in Figs. '7 and 8. The pinion I32 on the shaft I54 meshes with the rack of the front part I29 and the pinion I33 at the right-hand end of the shaft I54 meshes with the lower rack I83 on the zero setting slide 80. The upper rack 19 of the slide 80 main calculating shaft 18. The main calculating shaft I8 may operate shaft I38 in a given direction through gearing I 35, I38, I 31 and in the The tooth I26 at the lower inner opposite direction through gearing I35 and I39. The rotation of the shaft I38 drives a gear I40 and an intermediate gear MI. The active numeral wheel indicates 0, when one of the zero setting teeth I43 on the wheel I42 engages the zero setting stop I44.

Due to the inevitable slack or back lash in the train of mechanisms I32 to I42, the spring I30 of the transmission member I28, I29 tends to overthrow the main calculating shaft I3 and a train of gears I45, I46, I41, I48 (Fig. 7) which connect the shaft Hi to an intermediate shaft I 93. When this occurs, the driving wheel I49 (Figs. 7 and 8) on the intermediate shaft I93 by which the driving wheel I52-Fig. 3-of that column totalizer 4 which is in active position, is to be rotated, is thrown too far in the direction of the arrow I50 in Fig. 8 so that the pawl I III on the main looking shaft 22, instead of engaging between the teeth of the driving wheel I49, rides on the tooth following this gap, as shown in Fig. 8. When the value has been withdrawn from the cross totalizer 8, and been typed on the paper supported by the carriage 2, and the carriage now moves a step, a tooth of the driving wheel I52 of that column totalizer 4 which is in active position, collides with one of the teeth of thedriving wheel I49, instead of entering properly into the corresponding gap. This leads to disturbances in the function of the machine.

Trouble of this sort is eliminated for the. train of mechanism I45-I42 by a pawl I5Ia (Fig. 7) on the main locking shaft 22 engaging a locking wheel I5Ib on the main calculating shaft I6.

, For the train of mechanism including the drivthis slide.

asaaasi ing wheel m on the intermediate shaft m, trouble is eliminated as follows:

The ieft-hand end of the shaft I54 (Figs. 1 and 2), or the left-hand end of the shaft-pivoting screw, Fig. 4, in the bracket I53 extends into a slot I55 in the upper end of an aligning slide I56, as shown in Fig. 2, and guides the upper end of A not I53 is placed on a threaded portion I51 at the end or the shaft or screw so that the slide I56 is held on the shaft I54. At its lower end, the aligning slide I56 is guided by a headed screw I59 extending through a slot I60 and secured in the bracket 45. A roller I H is arranged at the inner side of the aligning slide I56 for cooperation with the left-hand cam plate 39 of the controlling unit, and a spring I62 whose upper end is connected to the aligning slide I56 and whose lower end is anchored on the fulcrum screw 48' of the bellcrank 41 which cooperates with the cam plate 38 at the right of the controlling unit, as described, pulls the aligning slide I56 downwards in the direction of the arrow 65, holding the roller I6I on the slide I56 against the cam plate 39. .1

A support I63 is adjustably secured to'the outer side of the aligning slide- I56 by screws I64. A lug I63a (Fig. 2) projects to the right and the front from this support I63 and a screw I65 is inserted in a hole in the lug. A pawl I66 is 'pivoted on the screw I66 for cooperation with a ratchet wheel I61 on the shaft I54. A spring I68 (Fig. 2) whose rear end is attached to a pin I69 on the aligning slide I56 and whose front end engages a pin I10 on the pawl I66, turns the pawl I66 anti-clockwise about the screw I65, and throws it into a gap of the ratchet wheel I61.

12. The operation of the correcting device When one of the not shown total keys for the cross totalizers 8 is depressed, the unit I4, I5, together with the auxiliary unit 38, 89, I91, are ro- A tated with the continuously rotating driving shaft [6, as described, and, when the cam plate 39 of the unit has rotated about 45 degrees, the roller I6I on the aligning slide I56 descends from the elevated portion of the cam plate 39 to its depressed portion under the action of its spring I62. The aligning slide I56 descends in the direction of the arrow 65, and the pawl I66 which is pivoted on the support I63 of the slide, descends with it and is moved out of engagement from the ratchet I61 on the shaft I54, whereupon the spring I68 turns the pawl anti-clockwise about the screw I65 until its pin I10 is arrested by the upper edge of the support I63. Zero setting now occurs as described in section II, and the driving wheel I49 (Fig. 7) on the intermediate shaft I93 is moved into the position shown in Fig. 8, with respect to the pawl II onthe main locking shaft 22. When the cam plate 39 of the controli unit has performed about half a revolution,

the elevated portion of the cam plate 39 again engages the roller I6I on the aligning slide I56, raising the slide against its spring I62, and in opposite direction to the arrow 65. The pawl I66 which, as described, is pivoted on the support I63 0! the slide I56, rises with the slide and imparts to the ratchet wheel I61 a small partial rotation in counterclockwise direction.- This partial rotation is transmitted to the driving wheel 9 on the intermediate shaft I93 through the pinion I33 on the shaft I54, the lower rack I34 on the zero setting slide 80, its upper rack 19, the spur gear 15, the main calculating shaft 16, and the train I45 to I48. The driving wheel I49 is thereby turned against the direction of the arrow I (Fig. 8) until the tooth of the pawl I5I is able to engage properly in the corresponding gap between the teeth of the driving wheel I49. The driving wheel I49 thereby has its teeth aligned for meshing with the driving wheel I52 of that column' totalizer'4 which is in active position.

By these aligning means, the selector shaft "I is also adjusted properly.

13. The transmission mechanism between the main calculating shaftand the selector shaft When the unlocking slide I1 (Figs. 3, 4, 9 and 10) descends, as described in sections 2, 3. and 4, an L-shaped dog I84 on the slide I1, as shown in Figs. 3, 4 and 10, engages the free end of a bellcrank I85 (Fig. 4) which is mounted to swing about a rivet I in a suitable bracket at the left of th zero setting slide 80. A pawl I88 is fulcrumed on the same rivet I90 with the bellcrank I85 for locking the zero setting slide 80 against downward movement, and a lug I81 is provided on the pawl I88 against which the lower edge of the horizontal arm of the bell crank I85 is held by a spring I86 engaging the tail end of the bellcrank I85. A spring I89 holds the pawl I88 in engagement with a rack I9I, Fig. 10, fastened to the zero setting slide 80 by a pair of pins.

When the unlocking slide I1 descends in the manner described, its dog I84 engages the free end of the bellcrank I85 and turns the bellcrank clockwise. Through the lug I81, the pawl I88 is also turned clockwise and out of engagement with the rack I9I, so that the zero setting slide 80 is now unlocked and free to descend. The spring I30 now becomes active and pulls the transmission member I28, I29 toward the front in the direction of the arrow I3I, and, through pinions I32 and I33 on the shaft I54, and the lower rack I34 on the zero setting slide 80, moves the slide downwards. Through its upper rack 19, the spur gear 15, the main calculating shaft 16, the train of gears I45 to I48, the intermediate shaft I93, and the driving wheel I49, the zero setting slide 80 rotates that driving wheel I52 of the column totalizer 4 which is in active position and from which the total is taken. In addition to the other gearing of the corresponding calculating place, the active zero setting wheel I9la, as shown in Fig. 10, is also rotated until it is arrested by one of its zero setting teeth I abutting against the zero stop I96 which has been raised into active position.

This zero setting operation as efiected by the spring I30 has the following drawback: When, for instance, lower values, such as 1, 2, or 3 were withdrawn from a calculating place of a totalizer, the spring I30 was not contracted to any considerable extent and so the full accumulated energy of the spring I30 which was abruptvly released by removing the pawl I88 from the This is avoided according to the invention by the equalizing device which will now be described.

14. The tension equalizing device Referring now to Figs. 9 and 10, a doublearmed lever I99 is mounted to swing about a screw 203 in a supPO '202 (Fig. 10) screwed into the machine frame I at its left-hand side. A roller I98 is mounted to rotate about the rivet 200 in lever I99 for cooperation with the central cam plate I91 of the auxiliary controlling unit.

The lower end of a T lever 20! is also fulcrumed on the screw 203, adjacent lever I99. A spring 205 connects a rivet 204 at the upper end of .the double-armed lever I99 to a rivet 208 at scribed, and disengages it from the teeth of the rack I9I.

The elevated portion 2I3 (Fig. 10) of the rotating control cam plate I91 now acts on the roller I98 of the double-armed lever I99, turning this, and through the spring 205, the T lever 20I clockwise about the screw 203 to move has a slot 2I0 which engages a pin 2 in the front part I29 of the transmission member I28, I29. In the normal position of the transmission member (Figs. 9 and 10) the roller I98 at the lower end of the double-armed lev'er I99 is on the edge of the central cam plate I91. By way of comparison. the spring I of Fig. has been shown in dot-and-dash lines in Fig. 9 but it is understood that the spring I30 is not provided in Figs. 9 and 10 but is replaced by the spring 205.

15. The operation of the equalizing device If it is desired to withdraw from a column totalizer 4 which is in active position, the value which has been calculated therein, the total key II is depressed, whereupon the unit I4, I5 andclockwise for some distance. Tension is thereby put on the spring 205 in that the lever 2M and its eccentric 201 are held by means of the locked zero setting slide 80.

The unlocking slide I1 descends on the descending portion of the cam plate M as the unit I4, I5 rotates in the direction of the arrow I89. A lug I80 (Fig. 10) on the descending unlocking slide I1 drops from and releases an arm I8I on which bears an eccentric I82 of slide 80, In consequence, the zero setting slide 80 and-the pinions I32 and I33 on the shaft I54 are released. The somewhat tensioned spring 205 direction of the arrow I3I by turning the T lever '20I clockwise about the screw 203 until" its eccentric 201 again bears against the rear edge of the double-armed lever I99. By the connection 2I0, 2 the transmission member I28, I29 is pulled in the direction of the arrow I3I by the spring 205 and the zero setting slide 80 is lowered by the pinions I32 and I33, and its lower rack I34, until the lowermost tooth of its angular rack I9I is arrested by the pawl I88. By these means, the zero setting slide 80 is 'so positioned that the spur gear 15 on the main calculating shaft 16 when-it is shifted to the right by the fork H, 12 on the coupling shaft 10, can engage in the teeth of the upper rack 19 on the zero setting slide without obstruction. The lug I84 on the descending unlocking slide I1 now swings the pawl I85 clockwisepias dethe transmission member I28, I29 further in the direction of the arrow I3I and thereby move the zero setting slide 80 downwards through the pinions I32 and I33 and the lower rack I34. The zero-sllde-including train from the T lever 20I to the zero-setting wheel I94a thus is moved or driven by cam I91 until arrested by the stopping of .said wheel I94a against; the zero stop I98, Fig. 10. The extent of this movement of the train varies, of course, in accordance with the extent of zeroizing rotation of wheel 194a. Following arrest of the train, the clockwise drive of lever I99 by cam I91 may continue independently tc its limit in that the spring 205 may correspondingly stretch and will, moreover, impart its force to the train to hold the parts in their positions of arrest. Following the period for maximum zeroizing stroke of the train, the total digit, which has been taken in a calculating place, is typed on the paper which is placed on rack 19 of the zero setting slide 80. Upon further rotation of the auxiliary controlling unit, the elevated portion 2I3 (Fig. 10) of the central cam plate I91 releases the roller I98 of the douhie-armed lever I99 and the spring 205 turns said lever anti-clockwise about its screw 203. At the same time the elevated portion of the cam plate I4 in the unit I4, I5 engages the roller I8 at the lower end of the unlocking slide I1 and raises the slide against the springs I9. The lug I of the unlocking slide I1 turns the arm I8I anti-clockwise and, through the eccentric'I-82,

the arm I8I raises the zero setting slide 80. By the ascending movement of the zero setting slide 80, the rack I34 and the pinions I33 and I32 on the shaft I54 return the transmission member I28, I29 into its initial position in the opposite direction of the arrow I3I and the T lever 20I and the double-armed lever I99 anticlockwise into their initial positions.

These operations occur in every decimal place of the totalizers. When the totalizer which is in active position, has been completely cleared and the total written, the corresponding total key is unlocked, causing the clutch I2, I3 to be opened to uncouple the unit I4, I5 and the auxiliary controlling unit 38, 39, I91 from the driving shaft Hi, all parts returning into their initial positions.

By means of the equalizing device, the velocity at which the transmission member I28, I29 and the mechanism connected thereto, are moved, is uniform from beginning to end, when withdrawing from a decimal place of a totalizer a lower value such as 1, 2 or 3.as well as when withdrawing a higher value such as 8 or 9 in the decimal system, or 10 or 11" in machines for British currency. In this manner, the force at which the zero setting teeth I95 strike the zero stop I96, is equalized, noise is reduced, and a more steady operation of the machine is effected. 0n the other hand, the values in the totalizers, especially higher ones, are withdrawn without fail because the central cam plate I 91 invariably drives the zero setting mechanism until the zero setting has been completed.

The mechanism including the spring 205 and the levers I08 and "I also prevents overstressingof parts in case of obstruction.

Having now particularly described and ascertained the nature of my said invention, and in what manner the same is to be performed, I declare that what I claim is:

1. In a machine of the character described having a totalizer wheel and a total key, the combination of a power drive, a cam cyclically operable by said drive upon operation of said key, a device transiently operatively connectable to said wheel and difi'erentially operable for zeroizing said wheel, an auxiliary cam operable jointly with the first-named cam by said drive, motion-transmitting means, including a yieldable connection, driven by the auxiliary cam for differentially operating said device to zeroize said wheel, and motion-transmitting means driven by the first-named cam for restoring said device and coincidentally restoring the first-named motion-transmitting means.

2. In a machine of the character described, having a totalizer wheel and a zero stop, the combination with a gear drive operable to turn said wheel to the zero-stop, of a device reciprocable in zeroizing and return movements, means operable to connect said gear drive in train with said device for the time of the zeroizing movement, means operable upon said device for reciprocating said device, said last-named means including a spring to impart the zeroizing movement to the train, the zeroizing movement of at least a part of the train as imparted by the spring being excessive because of back lash in the train, a ratchet associated with said device, a pawl, and means acting to operate the pawl to move the ratchet, at a time between the zeroizing and full-return movements of the device, to return said device part-way to correct the excess movement.

3. In a machine of the character described,

having a totalizer wheel operable to a zero stop, and a total key; the combination with a releas able zeroizing actuator reciprocable in zeroizlng and return movements, and a gear train operatively connecting the actuator and wheel during zeroizing of a power shaft, three cams con nectable collectively to said shaft upon operation of said key, means following one of the cams to release said actuator, motion-transmitting means, including a spring, cooperative with another one of the cams for operating the actuator in the zercizing movement, the first-named cam acting subsequently, lowing means; to operate movement, and means cooperatively with the third cam to return the actuator partly to take up excess movement thereof, said excess movement occurring, under the influence of said spring, because of back lash in the connected actuator and gear train.

4. In a machine of the character described having a totalizer wheel, the combination with a gear=train having a portion intermediate its ends operatively connectible with said wheel, and stop-means operatively connectible with one end of the train to limit differentially the extent of its actuation, of a device reciprocable in geartrain-actuating and return movements, means operable to connect the other end of said geartrain in train with said device for the time of the actuating movement, means operable upon the actuator in return .said device for reciprocating said device, said last-named means including a spring to impart the actuating movement to said device, the actuating movement of said portion of the train as imparted by means of the spring being excessive because of back-lash between said portion and the stopped end associated with said of the gear train, a ratchet device, a pawl, and means acting to operate the pawl to move the ratchet, at a time between the actuating and full-retum movements of the device to return said device part way to correct the excess movement.

' ROBERT ANSCH'UTZ.

through .the said fol-- 

